Signed, on stone, center right edge: [Whistler's butterfly device]
Watermark, center of sheet: PA Stamp, in brown, lower left: verso: R. Birnie Philip
Inscribed, in pencil, lower left corner: W58 | K 32862 Inscribed, center bottom edge of sheet: 64 Inscribed, lower right corner: 57 Inscribed, in brown ink, lower right corner: 38 Inscribed, in pencil, verso: a95642